Wind musical instrument



' Dec. 5, 1933. w R DAUSMAN 1,938,321

WIND MUS IGAL INSTRUMENT Filed Ju'ne 29. 1932 i J v-/.'

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Patented Dec. 5, 1933 1,938,321 WIND MUSICAL INSTRUMENT Willard P.Dausman, Elkhart, Ind., assigner to C. G. Conn, Ltd.,- Elkhart, Ind., acorporation of Indiana Application Il'une 29, 1932; Serial No. 619,851.

' s 'claims (c1. :a4-392) AMy invention relates to the piston `valves ofcornets, and similar musical instruments, and more particularly tothevalve keys` for such instruments.

The .piston valves of corncts, and other musical instruments which areprovided with reciprocating valves, are providedwith some means toprevent casual rotation of the valve within its casing in order that theproper registration of the valve ports and passages with the valvecasing ports and passages may be maintained, Such a means to preventvalve rotation has taken many and various forms, all of which are moreor less effective, and all oi which are objectionable to some degree,especially because of excessive friction and Wear.

The principal objectof my invention 'is to proide improved and simpliedymeans to prevent casual rotation" of thepiston valve of a cornet,

and like instruments, this improved means com' prising ay stationaryrod-like key which has a sliding* telescopic connection with the piston'valve', and which is disjoined from the valve casing.

Another and more specific object ofmy invention is' to provide avalveQkey which has a telescopic sliding connection with rthe pistonvalve and which is disposed between the valve stern and the valvecasing. f

Other'and more specific objects ofl the invention arementioned anddescribed herein.

The preferred embodiment of my invention is illustrated in theaccompanying drawing, where- 1n:

Figure 1 illustrates a fragmental side View of a wind musical instrumentof the cornet type vand including the three piston valve casings, andassociated parts;

Fig; 2 is an enlarged sectional View, par- 40 tially in section, ofoneof the cornet valve casings, its piston valve, and other details andparts, illustrating the application of my invention theretowiththe'valve in the elevated posi Fig. 3 is a similar view in fragmentalsection illustrating the piston valve in the depressed position;

Fig. 4illustratesvtwo side elevational views of the valve key and thehead plate therefor;

Fig. 5 illustrates a bottom plan view of the valve key head and valvekey connected therewith; and

Fig. 6 illustrates a modified form of the valve key head.

Similar numerals of reference indicate like of said disk.v

parts throughout the several views on the drawi ing.

`Referring lnow to the details of the drawing` the numeral 1 indicates atubular cornet valve casing of the conventional type and within whichthe usual reciprocatory cylindrical piston valve l 2 is arranged, saidvalve being normally upwardly urged by a coil spring 3 which is disposedwithin the casing 1 and seated upon the inner face 4of the' casingbottom cap 4. The valve 2165 may be provided with thev usual ports andpassages-notshown`-which are well known in the art, and may be providedalso with the top head member 5 which is rigidly mounted in the upperend of the tubular cylindrical portion thereof'.- 70 For reciprocallydepressing the valve 2 a stem 6 is rigidly and centrally connectedtherewith'in the head portion at 7,- said stein extending up` wardlythrough" the aperture 8 provided in the casing topv head 9 which may bescrew threaded 75 upon the valve casinglO, as is well'known.

' The finger tip 1'1 may be mounted upon-the upper end of thevstem 6exteriorly of the casing cap 9 for actuating the valve 2. The numeral 12indicates a flat substantially circular plate or disk 8@ which functionsas the head for the rod-like key 13, the latter being rigidly fastenedin the former at 14 at a point intermediate the centerof said diskland'its outer periphery and extending at substantially right anglesthereto. The disk 12 may be providedwith the relatively thin marginalflange l5A and -a radially arranged stop lug 16,7the latter beingpreferably coextensive with the outer periphery of the 'marginal flange15 ,c n The disk 12 is adapted to be clamped between the upper end ofthe valve casing 1 and the casing cap 9, and when so fastened the flange15 rests against the end of the valve casing and the reduced bodyportion of said disk fits within the bore of the valve casing Withslight clearance and with the stop lug 16 engaging in a' slot 17 formedin the edge of the valve casing 1. In the posi-- tion of the disk l2, asabove described, the casing cap 9 is screwed snugly against the upper19u surface of the disk 12, the engagement of stop lug 16 in casing slot17 confining the disk 12 against rotational displacement. The disk 12 isprovided with a central aperture 18 which is traversed by the stem 6,with slight 105 clearance to eliminate friction between the parts. Therod-like key 13 depends fromthe disk or head 12 substantially parallelwith the axis of the stem 6 and engages slidably in a bearing hole 19formed in the valve head 5, in which hole said key fits with very slightclearance, said hole extending substantially parallel with the axis ofthe valve 2.

From the foregoing it will be evident that the engagement of the disklug 16 in the slot 17 effectually prevents casual rotation of the disk12, and that the rod-like key 13, which depends from said disk and whichslidably engages the bearing hole 19 in the valve head 5, eiectuallyconfines the valve 2 against casual rotation. The rened form of the key13 contemplates a highly polished cylindrical member which slidablyengages the bearing hole 19 with so little friction that the engagementis practically without wear on either yof the parts.

In the modicaton illustrated Vin Fig. 6 the key head .12 is lengthenedsubstantially and provided with a tapered lower end 20 to facilitate itsintroduction to the casing interior.. And in this structure a yieldablering-like disk 21,` made of cork or other `suitable yieldable material,is mounted lin a suitable recess provided in the upper face of themember 12, said disk 21 preferablyprojecting above theplaneof ythe'lange15 of saidhea'dan'd being directly engaged by the ca p 9 wheny thelatter is screwed into position on the casing 1.

L Ina musical instrument of the characterdescri'bedthe combination withthe valve casing, the reciprocatory valve therein, and a valve kcasingpap, of means to prevent casual rotationA of said valve, said meanscomprising an anchorage element mounted between said valve casing endand said casingcap,A means-to prevent-rotation o f saidanchorageelement, and an elongated key rigidly connected with saidanchorage element and extending downward into the valvecasing bore intoslidable telescopic relation with vsaid valve. y

2. In v'a windrnusioal instrument of the character Vde s cribe :l,'thecombination with the valve casing, vthe reciprocatory valve therein, astern for isaidpvalve, and cap for said valve casing, of meanstowpreventcasual rotation of said valve, said meansfcomprising an aperturedanchorage element mounted between said valve casing end and Asaiducasingcap, andan elongated key rigidly connected with said anchorage elementand eX- tending downward intothe valve casing bore into telescopicslidablerelationvwith said valve, said valve rstem vtraversing theaperture in said anchorage element.

3.*In a wind musical instrument of the ychar- A acter described, thecombination with the valve casing and a reciprocatoryvalve therein, ofmeans to prevent rotation of said valve, said means comprising anelement rigidly mounted adjacent the t end of said valve casing', ayieldable element mounted thereon, an elongated key within said valvecasing and disjoined therefrom, and a slidable telescopic connection forsaid key'between said rigidly mounted element andV said valve` 4. Inawind-musical instrument of the character described, the combination withthe valve casing, the reciprocatory valve therein, and a valve casingcap screw threaded to said casing, of Y means to prevent casual rotationof said valve, said means comprising an anchorage element mountedbetween said valve casing end and said casing cap and provided with ayieldable pad which is engaged by said casing cap, means to preventrotation of said anchorage element,rand an elongated key rigidlyconnected with said anchorage element and extending downward into thevalve 'casing bore into slidable telescopic relation with said valve.

5. AIn 'a wind musical instrument of the character described, thecombination with a valve vcasing, a reciprocatory valve therein, anapertured removable'ca'p for said valve casing, and the valve stem forsaid valve, of means to prevent rotation of said valve, said meanscomprising a centrally apertured element nonrotata'bly mounted between'said valve casing and the cap therefor, said valve stem traversing saidaperture of saidk element, and an elongated key connected with anddepending from said centrally apertured lelement and `projectingdownward into the valveY casing relation with said valve.

6. In a wind vmusical instrument -of the character described, thecombination with a valve casing, a reciprocatory valve therein, acentrally apertured casing cap removably mounted on said casing, andavalve stem connected with said valve and traversing said casingfca'paperture, ofmeans to prevent rotation of said valve when reciprocal*- lyactuated, said means `comprising va centrally apertured anchoragelplatenonrotatably 'mounted between said valvecasingand the capl there- Vfor,'said valve stern traversing 'said anchorage plate aperturaand anelongated key vconnected with and depending from said 'anchorage plateand projecting downward into the valve casing boreYeccentric'allyv'thereof `and into lslidable telescopic relation withSaid valve.v

WILLARD P. DAUSBLAN.V

bore'eccentrically thereof into slidable telescopic n

